grammar rules

A gerunds (- ing form of a verb) can function as an object of a preposition.

PREPOSITION                                OBJECT

I´m afraid                of                 flying 

She´s bored              with              cooking

                        She objects                to             discussing her feelings

Be careful! Don´t use an infinitive as the object of a preposition.

Don´t say: Let´s go to a movie instead of to watch TV.

Expressions followed by gerunds

Active           +         preposition

Angry about                  afraid of 

Excited about           sick  /  tired of

Depressed   about             bored  with

Happy   /   sad about                           .

Verb   +   preposition

Complain about         apologize  for

Talk about                   believe in

Worry  about              object to

Think about